<application-policy name = "SQLLogin">
       <authentication>
          <login-module code = "org.jboss.security.auth.spi.DatabaseServerLoginModule"
             flag = "required">
	     <module-option name = "unauthenticatedIdentity">guest</module-option>
             <module-option name="dsJndiName">java:/MSSQLDSSPRINTA</module-option>
             <module-option name="principalsQuery">
		select passwd from Users where username=?
	     </module-option>
             <module-option name="rolesQuery"> 
		select userRoles,'Roles' from UserRoles where username=? 
             </module-option>

          </login-module>
       </authentication>
    </application-policy>